<template>
  <div>
    <!-- 面包屑导航 -->
    <breadcrumb :navData="navData"></breadcrumb>
    <!-- 卡片区域 -->
    <el-card class="box-card">
      <!-- 添加按钮 -->
      <el-button type="primary" @click="addRolesVisible = true"
        >添加角色</el-button
      >

      <!--table表格在浏览器本身渲染差-->
      <el-table :data="roleList" border>
        <!-- 添加展开列 -->
        <el-table-column type="expand">
          <!--栅格-->
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 == 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="deleteRoles(scope.row, item1.id)">
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二，三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限  -->
                <el-row
                  :class="[i2 == 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="deleteRoles(scope.row, item2.id)"
                    >
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      closable
                      @close="deleteRoles(scope.row, item3.id)"
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="onEditRoles(scope.row)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="onDeleteUser(scope.row)"
              >删除</el-button
            >
            <el-button
              size="mini"
              @click="showSetRightDialog(scope.row)"
              type="warning"
              icon="el-icon-setting"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 添加或者编辑角色 -->
    <el-dialog
      :before-close="addRolesClose"
      :title="addRoles.roleId ? '编辑角色' : '添加角色'"
      :visible.sync="addRolesVisible"
    >
      <el-form
        :model="addRoles"
        :rules="addRolesRules"
        ref="addRolesForm"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRoles.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRoles.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="addRolesClose">取 消</el-button>
        <el-button type="primary" @click="onAddRoles">确 定</el-button>
      </div>
    </el-dialog>

    <!-- 分配权限对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClose"
    >
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      >
      </el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      navData: ["用户管理", "角色列表"],
      addRolesVisible: false,
      addRoles: {
        roleId: null,
        roleName: "",
        roleDesc: "",
      },
      addRolesRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
          { min: 2, max: 8, message: "长度在 2 到 8 个字符", trigger: "blur" },
        ],
        roleDesc: [
          { required: true, message: "请输入角色描述", trigger: "blur" },
          { min: 2, max: 8, message: "长度在 2 到 8 个字符", trigger: "blur" },
        ],
      },
      roleList: [],
      setRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: "authName",
        children: "children",
      },
      defKeys: [],
      roleId: "",
    };
  },
  created() {
    this.getRoleList();
  },

  methods: {
    async getRoleList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200)
        return this.$message.error("获取角色列表失败");
      this.roleList = res.data;
    },
    async deleteRoles(role, rightId) {
      const confirmResult = await this.$confirm(
        "请问是否要删除该权限",
        "删除提示",
        {
          confirmButtonText: "确认删除",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult != "confirm") {
        return this.$message.info("已经取消删除");
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200)
        return this.$message.error("删除角色权限失败");
      role.children = res.data;
    },
    async showSetRightDialog(role) {
      this.roleId = role.id;
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status !== 200) return this.$message.error("获取权限树失败");
      this.rightsList = res.data;
      this.getLeafKeys(role, this.defKeys);
      this.setRightDialogVisible = true;
    },
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach((item) => {
        return this.getLeafKeys(item, arr);
      });
    },
    setRightDialogClose() {
      this.defKeys = [];
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ];
      const idStr = keys.join(",");
      const { data: res } = await this.$http.post(
        `/roles/${this.roleId}/rights`,
        {
          rids: idStr,
        }
      );
      if (res.meta.status !== 200) return this.$message.error("分配权限失败");

      this.$message.success("分配权限成功");
      this.getRoleList();
      this.setRightDialogVisible = false;
    },
    //确定添加或者编辑角色
    onAddRoles() {
      this.$refs.addRolesForm.validate(async (valid) => {
        if (!valid) return;
        let obj;
        let roleId = this.addRoles.roleId;
        if (roleId) {
          obj = await this.$http.put(`roles/${roleId}`, this.addRoles);
        } else {
          obj = await this.$http.post("roles", this.addRoles);
        }
        let { data: res } = obj;
        if (res.meta.status !== 200 && res.meta.status !== 201)
          return this.$message.error(res.meta.msg);
        await this.getRoleList();
        this.$message.success(res.meta.msg);
        this.$refs.addRolesForm.resetFields();
        this.addRolesVisible = false;
      });
    },
    //编辑角色
    async onEditRoles(row) {
      let { data: res } = await this.$http.get(`roles/${row.id}`);
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.addRoles.roleId = res.data.roleId;
      this.addRoles.roleName = res.data.roleName;
      this.addRoles.roleDesc = res.data.roleDesc;
      this.addRolesVisible = true;
    },
    //关闭弹窗的时候清空弹窗中的默认数据
    addRolesClose() {
      this.addRoles.roleId = null;
      this.addRoles.roleName = "";
      this.addRoles.roleDesc = "";
      console.log("=====>", this.addRoles);
      this.addRolesVisible = false;
    },
    // 删除用户
    async onDeleteUser(row) {
      let result = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      console.log(result);
      if (result !== "confirm") return this.$message.info("取消删除");
      let { data: res } = await this.$http.delete(`roles/${row.id}`);
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.getRoleList();
      this.$message.success(res.meta.msg);
    },
  },
};
</script>

<style lang="scss" type="text/scss" scoped>
.el-table {
  margin-top: 20px;
}
.el-tag {
  margin: 7px;
  user-select: none;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>
